Compact Liberty database migrations into a single migration,
'302_liberty.py'.
Users will now need to update to Liberty before updating to Mitaka or
later.
Specific changes include:
- Drop 'volumes', 'iscsi_targets' tables
- Add 'migration_type', 'hidden' columns to 'migrations' table
- Add 'last_seen_up' column to 'services' table
- Add index for 'uuid' column of 'virtual_interfaces' table
- Add 'forced_down' column to 'services' table
- Add 'version' column to 'services' table
- Add 'migration_context' column to 'migration_context' table
- Add index for 'instance_uuid' column of 'instance_system_metadata'
table for PostgreSQL and SQLite; this was already present for MySQL
This hits the same issue seen previously of a constraint being added to
a boolean field in a shadow table on SQLite, despite this being disabled
for the main table. As before, we can ignore this given SQLite is not a
production DB.
We also hit another case of doing something to a main table but not its
shadow table, which will have to be resolved later.
Now that we can rely on flavor records having been migrated, we can
remove the 'db migrate_flavor_data' nova-manage command. This will be
done separately.
When testing, the previous base version was 279. It is now 301.
[1] https://github.com/sqlalchemy/alembic/issues/652
Change-Id: I9933a9e9087868f1cd92100b3e82c35fe02cab09
Signed-off-by: Stephen Finucane <stephenfin@redhat.com>
1da542ff7a